21620112244041 has 12 divisors (see below), whose sum is σ = 30622258173872. Its totient is φ = 13565560623168.

The previous prime is 21620112243971. The next prime is 21620112244069. The reversal of 21620112244041 is 14044221102612.

It is not a de Polignac number, because 21620112244041 - 2¹⁴ = 21620112227657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21620112244091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12468345295 + ... + 12468347028.

Almost surely, 2^{21620112244041} is an apocalyptic number.

It is an amenable number.

21620112244041 is a deficient number, since it is larger than the sum of its proper divisors (9002145929831).

21620112244041 is a wasteful number, since it uses less digits than its factorization.

21620112244041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24936692360 (or 24936692343 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 30.

Adding to 21620112244041 its reverse (14044221102612), we get a palindrome (35664333346653).

The spelling of 21620112244041 in words is "twenty-one trillion, six hundred twenty billion, one hundred twelve million, two hundred forty-four thousand, forty-one".